drm/amd/display: Remove unnecessary conversion to bool

Fix the following coccicheck warnings:

./drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c:220:65-70:
WARNING: conversion to bool not needed here.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dwb_cm.c

@@ -217,7 +217,7 @@ static bool dwb3_program_ogam_lut(
 	else
 		next_mode = LUT_RAM_A;
 
-	dwb3_configure_ogam_lut(dwbc30, next_mode == LUT_RAM_A ? true : false);
+	dwb3_configure_ogam_lut(dwbc30, next_mode == LUT_RAM_A);
 
 	if (next_mode == LUT_RAM_A)
 		dwb3_program_ogam_luta_settings(dwbc30, params);